add dockerfile + gh action

.github/workflows/service-extensions-publish.yml

@@ -0,0 +1,45 @@
+name: Publish Service Extensions Callout images packages
+
+# on push in the PR branch
+on:
+ push:
+ branches:
+ - 'flavien/service-extensions'
+
+permissions:
+ contents: read
+ packages: write
+
+jobs:
+ publish-service-extensions:
+ runs-on: ubuntu-latest
+ steps:
+ - name: Checkout
+ uses: actions/checkout@v4
+
+ - name: Set up Go 1.22
+ uses: actions/setup-go@v5
+ with:
+ go-version: 1.22
+ id: go
+
+ - name: Set up QEMU
+ uses: docker/setup-qemu-action@v3
+
+ - name: Set up Docker Buildx
+ uses: docker/setup-buildx-action@v3
+
+ - name: Login to Docker
+ shell: bash
+ run: docker login -u publisher -p ${{ secrets.GITHUB_TOKEN }} ghcr.io
+
+ - name: Build and push
+ uses: docker/build-push-action@v6
+ with:
+ context: .
+ file: ./contrib/envoyproxy/envoy/cmd/serviceextensions/Dockerfile
+ platforms: linux/amd64,linux/arm64
+ push: true
+ tags: ghcr.io/datadog/dd-trace-go/service-extensions-callout:latest,ghcr.io/datadog/dd-trace-go/service-extensions-callout:${{ github.sha }}
+
+

contrib/envoyproxy/envoy/cmd/serviceextensions/Dockerfile

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+# Build stage
+FROM golang:1.22-alpine AS builder
+ENV CGO_ENABLED=1
+WORKDIR /app
+COPY . .
+RUN apk add --no-cache --update git build-base
+RUN go build -o ./contrib/envoyproxy/envoy/cmd/serviceextensions/serviceextensions ./contrib/envoyproxy/envoy/cmd/serviceextensions
+
+# Runtime stage
+FROM alpine:3.20.3
+RUN apk --no-cache add ca-certificates tzdata libc6-compat libgcc libstdc++
+WORKDIR /app
+COPY --from=builder /app/contrib/envoyproxy/envoy/cmd/serviceextensions/serviceextensions /app/serviceextensions
+COPY ./contrib/envoyproxy/envoy/cmd/serviceextensions/localhost.crt /app/localhost.crt
+COPY ./contrib/envoyproxy/envoy/cmd/serviceextensions/localhost.key /app/localhost.key
+
+EXPOSE 80
+EXPOSE 443
+
+CMD ["./serviceextensions"]